Butön Rinchen Drup (1290–1364) has been the role model for many of Tibet's greatest masters over the centuries, including the present Dalai Lama. He was a simple monk and a dear spiritual friend of all, high and low, and he embodied the highest degree of Buddhist scholarship and mastery of meditation. Lamas of all denominations still commonly refer to him as “omniscient Butön.” Lisa Stein is a disciple of Thinley Norbu Rinpoche and Lama Tharchin Rinpoche. Ngawang Zangpo (Hugh Leslie Thompson), a Tsadra Foundation fellow, is a disciple of many Kagyu, Shangpa, and Nyingma masters. This is his fourth book translated under the auspices of the Tsadra Foundation.